MITSUBISHI FUSO issued a recall on the FM617FM64F, and FM657 models

On certain vehicles equipped with an F060T or F070T front axle, the front wheel hub outer bearing lock nut may have been improperly tightened during initial assembly, and an insufficient amount of grease may have been applied to the outer bearing. These conditions could result in the outer bearing generating excessive heat and/or breaking, causing the vehicle to become disabled. In the worst case, the excessive heat could cause a fire. Correction: Dealers will inspect the front inner and outer wheel hub bearings, and replace any bearings with signs of damage.